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Tuning in on sound: Reducing noise in the workplace

Construction Specifier

Building a better building envelope Achieving the well-balanced acoustic goal becomes challenging due to improvements in building envelopes, constructing demising assemblies for enhanced sound isolation, and quieter mechanical systems. Review post-construction installations for compliance and performance objectives.

IIC 64
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DCA3: Designing fire-rated I-joist assemblies

Construction Specifier

Some of the largest I-joist manufacturers have brought products to market that do not comply with DCA3, backed instead by privately commissioned fire test reports based on proprietary assemblies. It has been used in residential construction for decades, is commonly available at hardware stores and lumber yards, and is inexpensive.

Design 52